Home / 260,220.09-390,064.25-147,662.57

Finding the Fourth Proportional to 260,220.09, 390,064.25 and 147,662.57

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Solution

The fourth proportional to 260,220.09, 390,064.25 and 147,662.57 is: 221,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,220.09 : 390,064.25 = 147,662.57 : x
  2. Step 2: Convert to fraction form
    260,220.09/390,064.25 = 147,662.57/x
  3. Step 3: Cross multiply
    260,220.09x = 390,064.25 × 147,662.57
  4. Step 4: Simplify right side
    260,220.09x = 57,597,886,931.49
  5. Step 5: Solve for x
    x = 57,597,886,931.49/260,220.09
  6. Step 6: Final answer
    x = 221,342.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.